{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xbf2cd547f22f8ab324f4e66237ceb46fd2755c5b3b3a41f00104696f812f3211",
    "signature": "0xfe4386ca673c24d0414c221939758b31cc93b53e8cd834d17833c69aff06288f447a1bf484ec779cba9e61592d85cd3a93771864409f3e8f3b55b1521bbf36ec1b",
    "signer": "0x96955EF477cCb3ac1d4f5c5e5A540b3F4D7F29B7",
    "userId": "539542722"
  }
}